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.\"     from: @(#)chgrp.1	8.3 (Berkeley) 3/31/94
.\"
.Dd January 25, 1997
.Dt CHGRP 1
.Os
.Sh NAME
.Nm chgrp
.Nd change group
.Sh SYNOPSIS
.Nm chgrp
.Oo
.Fl R
.Op Fl H | Fl L | Fl P
.Oc
.Op Fl f
.Op Fl h
.Ar group
.Ar file Op Ar ...
.Sh DESCRIPTION
.Nm
sets the group ID of the specified files.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl H
If the
.Fl R
option is specified, symbolic links on the command line are followed.
(Symbolic links encountered in the tree traversal are not followed.)
.It Fl L
If the
.Fl R
option is specified, all symbolic links are followed.
.It Fl P
If the
.Fl R
option is specified, no symbolic links are followed.
.It Fl R
Change the group ID for the file hierarchies rooted
in the files instead of just the files themselves.
.It Fl f
The force option ignores errors, except for usage errors and doesn't
query about strange modes (unless the user does not have proper permissions).
.It Fl h
Change the group ID of the specified symbolic link.
The
.Fl h
and
.Fl R
options are mutually exclusive.
.El
.Pp
The
.Fl H ,
.Fl L
and
.Fl P
options are ignored unless the
.Fl R
option is specified.
In addition, these options override each other and the
command's actions are determined by the last one specified.
.Pp
The
.Ar group
operand can be either a group name from the group database,
or a numeric group ID.
If a group name is also a numeric group ID, the operand is used as a
group name.
.Pp
The user invoking
.Nm chgrp
must belong to the specified group and be the owner of the file,
or be the super-user.
.Pp
The
.Nm chgrp
utility exits 0 on success or >0 if an error occurred.
.Sh FILES
.Bl -tag -width /etc/group -compact
.It Pa /etc/group
group ID file
.El
.Sh SEE ALSO
.Xr chown 2 ,
.Xr fts 3 ,
.Xr group 5 ,
.Xr passwd 5 ,
.Xr symlink 7 ,
.Xr chown 8
.Sh STANDARDS
The
.Nm chgrp
utility is expected to be POSIX 1003.2 compatible.